package com.example.boidelov3.data;

import org.junit.Test;
import static org.junit.Assert.*;

/**
 * Tests unitaires pour la classe Result.
 */
public class ResultTest {

    @Test
    public void testSuccess_createsSuccessfulResult() {
        Result<String, Exception> result = Result.success("test data");

        assertTrue("Result should be success", result.isSuccess());
        assertFalse("Result should not be failure", result.isFailure());
        assertEquals("Data should match", "test data", result.getData());
        assertNull("Error should be null", result.getError());
    }

    @Test
    public void testFailure_createsFailedResult() {
        Exception error = new Exception("test error");
        Result<String, Exception> result = Result.failure(error);

        assertFalse("Result should not be success", result.isSuccess());
        assertTrue("Result should be failure", result.isFailure());
        assertNull("Data should be null", result.getData());
        assertEquals("Error should match", error, result.getError());
    }

    @Test
    public void testGetOrNull_returnsDataWhenSuccess() {
        Result<String, Exception> result = Result.success("test data");

        assertEquals("Should return data", "test data", result.getOrNull());
    }

    @Test
    public void testGetOrNull_returnsNullWhenFailure() {
        Result<String, Exception> result = Result.failure(new Exception("error"));

        assertNull("Should return null", result.getOrNull());
    }

    @Test
    public void testGetOrElse_returnsDataWhenSuccess() {
        Result<String, Exception> result = Result.success("test data");

        assertEquals("Should return data", "test data", result.getOrElse("default"));
    }

    @Test
    public void testGetOrElse_returnsDefaultWhenFailure() {
        Result<String, Exception> result = Result.failure(new Exception("error"));

        assertEquals("Should return default", "default", result.getOrElse("default"));
    }

    @Test
    public void testWithIntegerType() {
        Result<Integer, Exception> result = Result.success(42);

        assertTrue("Should be success", result.isSuccess());
        assertEquals(Integer.valueOf(42), result.getData());
    }

    @Test
    public void testWithCustomException() {
        class CustomException extends Exception {
            public CustomException(String message) { super(message); }
        }

        Result<String, CustomException> result = Result.failure(new CustomException("custom error"));

        assertTrue("Should be failure", result.isFailure());
        assertEquals("custom error", result.getError().getMessage());
    }
}